Improvement in sash balance and lock



J. B. RAYNER & E. G. BURR.

Sash-Balance and Lock.- No. 204,374.

, Patented May 28,1878

UNITED STATES PATENT QFFIG-E.

JOHN B. RAYNER AND EUGENE G. BURR, OF SPRINGFIELD, MASS.

IMPROVEMENT IN SASH BALANCE AND LOCK.

Specification forming part of Letters Patent No. 204,374, dated May 28,1878; application filed January 24, 1878.

To all whom it may concern:

Be it known that we, JOHN B. RAYNER and EUGENE G. BURR, both ofSpringfield, county of Hampden and Commonwealth of Massachusetis, bar einvented new and useful I mprovements in Devices for Raising, Lowering,and Fastening Windows, Blinds, Screens, &c., of which the following is aspecification:

The invention consists in the arrangement, in a sash-balance, of a bolt,thumb-piece, and spring, in combination with the other parts of aratchet-and-pinion balance.

In the accompanying drawing, in which similar letters of referenceindicate like parts, Figure 1 is a front View of a window and frame withthe device attached. Fig. 2 is a side view of our invention, havingparts in section; and Fig. 3 is a view of the locking-bolt.

We fasten a rack on. either side of the frame tobe moved, as shown at F,Fig. 1. Wefasteu the frameEto the side of the casing. The shaft H passesthrough the frame or plate E and pinion L, and rests in bearing N, thewhole being placed so that the pinion L is in gear with rack F. On theend.- of shaft H we place crank-wheel D. The bolt B is secured in placebyscrewspassingfrom thefront,through spring I and slots 1; o in plate E,into bolt B. The head of the lower screw is made large enough to serveas a thumb-piece, t, for movingthe bolt B. On plate E is pin T, which,when bolt B is drawn down, passes through spring I, and holds the boltaway from shaft H. Attached to bolt Bis rod c,around which is a spiralspring.

To look the sash, spring I is forced outward until it clears pin T, whenthe spiral spring on rod 6 forces the bolt upward against the shaft, atwhich point we make the shaft square, or of any convenient shape whichmay be held securely by the bolt. To prevent binding, we placefriction-pulleys C, Fig. 1, on the side of the frame opposite theraising device.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

1. In a sash balance and lock, the frame E and spring-bolt B, havingthumb-piece t, in combination with pinion L, shaft H, and rack F,arranged and operating substantially as shown.

2. The spring I, in combination with bolt B and frame E, having pin T,as and for the purpose set forth.

JOHN B. RAYNER. EUGENE G. BURR.

Witnesses:

CORNELIUS S. HURLBUT, D. E. WEBsTER.

